#55B277
Closest named color: Dark Seafoam Green (#3EAF76). oklch(69.1% 0.125 153.7), rgb(85, 178, 119).
Aa
Black text reads best on this color (8.02:1).
About this color
#55B277 is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.125 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.020 away. Black text reads best on it, at 8.02:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.125) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 8.02:1 |
| White text | 2.61:1 |
Values
| HEX | #55B277 |
| RGB | rgb(85, 178, 119) |
| HSL | hsl(142, 38%, 52%) |
| OKLCH | oklch(69.1% 0.125 153.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #55B277 | 2.61:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #55B277 | 8.02:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #55B277 text on white | 2.61:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #55B277 text on black | 8.02:1 | AAA | Lc -51.1 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DFEFE3
oklch(93.7% 0.023 153.4)
-
Step 200
200
#C4E2CC
oklch(88.5% 0.044 153.6)
-
Step 300
300
#99D0AA
oklch(80.9% 0.078 154.2)
-
Step 400
400 (this color)
#55B277
oklch(69.1% 0.125 153.7)
-
Step 500
500
#02A45A
oklch(63.1% 0.159 153.8)
-
Step 600
600
#008A4A
oklch(55.6% 0.141 153.6)
-
Step 700
700
#00743E
oklch(49% 0.124 153.9)
-
Step 800
800
#005F32
oklch(42.6% 0.107 154.1)
-
Step 900
900
#005028
oklch(37.8% 0.097 153.4)
-
Step 950
950
#022F17
oklch(26.9% 0.065 154.4)
#55B277 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #B2A573 | 0.111 |
| Deuteranopia (no green cones) | #A59C7B | 0.109 |
| Tritanopia (no blue cones) | #3DB0A3 | 0.064 |
| Achromatopsia (no color) | #A0A0A0 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55B277
#55B277
oklch(69.1% 0.125 153.7)
- #CA7DBC
#CA7DBC
oklch(69.1% 0.125 333.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #55B277, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.020
- Medium Sea Green #3CB371 ΔE 0.021
- Algae #54AC68 ΔE 0.022
- Boring Green #63B365 ΔE 0.025
- Bluey Green #2BB179 ΔE 0.026
- Tea #65AB7C ΔE 0.027
- Dark Seafoam #1FB57A ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.032
Use #55B277 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.